A girl who has a strange obsession with knifes usually for the ascetics. This could be a sub category of art hoe depending on the person.
“Yeah I am a knife hoe but just for the ascetics I don’t like the big scary knifes”
Seeing a woman look with a sexual desire toward your man, so you get up walk over to her and stab her in the boob.
Me and my boo were at the club and i saw this thirsty chick looking at my man so i went over and "knife that hoe"